cs 50 error :Nothing to be done for caeser

Question

It shows Nothing to be done for caeser. what to do??

Answer 1

1. There are screenshot tools. So many ways. For example, you could press the Print key on your keyboard, and on most systems current screen content will end up on the clipboard, from where you could paste it into any programme. There are many tools to provide more options like easy cropping and annotations, saving screenshots with autogenerated file names, whatever you want. Firefox has an own screenshot tool without a graphical UI, included in a command line accessed by Shift+F2 and run with screenshot. Anything, but please no photos if possible.
2. Where is your caesar.c located (you have two directories where I might expect it)? That's the directory where you would make caesar. Note that the guy was named GAIVS IVLIVS CAESAR with an A before the R of his cognomen.